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3 years ago

Evaluate the expression for the with the values of a=1/2 and b=3/4. 20a −(4b+5) +?

Mathematics

1 answer:

Dima020 [189]3 years ago

5 0

answer is 4

i used calculator

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Simplify 24÷⌈32÷(8−5)⌉−(−6)

Andrews [41]

Decimal form - 8.24
mixed number form - 8 1/4

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3 years ago

3x = 6<br><br> Help me p l e a s e

GuDViN [60]

Answer:

x=2

Step-by-step explanation:

have a nice day

3 0

3 years ago

Which quadratic equation has solutions x=8 and x=−1?

andrezito [222]

There are two ways you can do this

$Using the formula$

${x}^{2} - (sum \: of \: roots)x + poduct \: of \: roots = 0$

${x}^{2} - (8+-1)x + - 1 \times 8 = 0$

${x}^{2} - 7x - 8 = 0$

$Working backwards$

$x = 8 \: or \: x = - 1$
$\Rightarrow x-8=0 \: or \: x+1=0$

$\Rightarrow (x-8)(x + 1)=0$
$\Rightarrow {x}^{2} + x -8x - 8 = 0$
$\Rightarrow {x}^{2} - 7x - 8 = 0$

7 0

4 years ago

What is 83 + 119 + 17 =

Fittoniya [83]

Answer:

219

Step-by-step explanation:

83 + 119 = 202

202 + 17 = 219

3 0

3 years ago

Read 2 more answers

In 2014, the population of China was 1.39 billion. Compare China’s 2014 population to the world population with a ratio. Write y

pychu [463]

Answer:

Faction of population = 1.39 / 7.2

Percentage of population = 19.3% (Approx.)

Step-by-step explanation:

Given:

China's population in 2014 = 1.39 billion (Approximately)

Find:

Compare China's population to world population

Computation:

World's population in 2014 = 7.2 billion (Approximately)

Faction of population = China's population in 2014 / World's population in 2014

Faction of population = 1.39 / 7.2

Percentage of population = [China's population in 2014 / World's population in 2014]100

Percentage of population = [1.39/7.2]100

Percentage of population = [0.193]100

Percentage of population = 19.3% (Approx.)

6 0

3 years ago